DOWNLOAD Sony KDL-40NX725 Service Manual ↓ Size: 6.56 MB | Pages: 61 in PDF or view online for FREE

Model
KDL-40NX725
Pages
61
Size
6.56 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-40nx725.pdf
Date
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Sony KDL-40NX725 Service Manual ▷ View online

KDL-40NX725 32
SECTION 5 - FLOW CHARTS AND DIAGRAMS
OVERVIEW
The following flow charts provide information to determine what repair parts to order based on the TV error.
KDL-40NX725 33
SECTION 5 - FLOW CHARTS AND DIAGRAMS
NO POWER
VLED_VCC
GL_CTRL
VLED_GND
LD_ERR
1~4
6~10
11
13
POWER_ON
TCON_ON
BL_ERR
AC_OFF_DET
1
6
7
8
GND
AU_GND
STBY3.3V
AU_12V
9
10
11, 13
12, 14
GND
TCON_12V
REG_12V
REG_12V
15
16, 18
20, 22
24, 26
AC IN (N)
AC IN (H)
AC IN (N)
AC OUT (N)
AC IN (H)
AC OUT (H)
1
2
1
3
5
7
CN6801
CN6151
TCON_12V
AUDIO_GND
REG_12V
REG_12V_GND
1
2, 3
4, 5
6, 7
AUDIO_12V
STBY3.3V
8, 9
10
GND
POWER_ON
TCON_ON
BL_ERR
1
3
7
8
AC_OFF_DET
9
CN6002
CN6001
TO LD BOARD
ENERGY 
SAVING 
SWITCH
BATL
G4 (40")
CN6003
CN6002
14
LED_ON
FIGURE 5-1.  POWER SUPPLY DIAGRAM
KDL-40NX725 34
SECTION 5 - FLOW CHARTS AND DIAGRAMS
No Power
Is standby LED 
blinking?
No
Yes
No
See protection 
flowchart
Yes
Is energy
Saving switch on 
side of unit turned 
off?
Does red standby 
LED on front panel 
light?
High (3.3V)
on pin 7 of CN6151 
on power supply?
Yes
No
BATL Board
Yes
Turn switch on
No
ENERGY SAVING 
SWITCH
Press power 
button while 
monitoring pin 1 
of CN6151 on 
power supply 
board
High (3.3V)
on pin 1 of CN6151 
on power supply?
Yes
No
G4 Board
G4 Board
G4 Board
FIGURE 5-2.  NO POWER FLOWCHART
KDL-40NX725 35
SECTION 5 - FLOW CHARTS AND DIAGRAMS
STANDBY LED BLINKING
Protect 
Shutdown. 
Standby LED 
Blinking
No
Yes
No
Yes
2X
BATL Board
3X
4X
No
Yes
5X
Yes
6X
No
7X
Imediately
LCD Panel
TCON
LCD Panel
Yes
No
After a while
BATL Board
Check ventilation
G4 Board
G4 Board
FIGURE 5-3.  PROTECTION SHUTDOWN FLOWCHART
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